1
Take your charm and glue a jump ring to the top or center of it. I used a broken hair clip for mine, but you can use anything you want. If you can't find anything lying around, try making your own charms from beads!
2
Connect another jump ring and a jewelery clasp to the charm.
3
Clip the charm onto the center of the chain. Then add a jump ring & jewelery clasp to the ends of the chain and connect them.
4
Repeat steps 1 & 2 to make several charms. Change them whenever you'd like, or wear them all at once!